We’ve been talking about the sharing economy for over a decade, and even in the face of regulatory backlash, it shows few signs of slowing down. Alternative forms of employment characteristic of the gig economy have become so mainstream, few of us think twice about hopping into a stranger’s car…or even inhabiting someone else’s home thanks to the mobile apps that connect us. What forces continue to power the sharing economy and how has it changed all these years later? Experts Carlo Ratti and Rachel Botsman weigh in.